国こく産さん材ざい

noun

domestic timber; domestically produced lumber

Refers to wood or lumber harvested and processed within the country, often contrasted with imported timber (輸入材). Common in forestry, construction, and environmental policy contexts.

• この住じゅう宅たくには国こく産さん材ざいが使つかわれています。

  Domestic timber is used in this house.

• 国こく産さん材ざいの利り用ようを促そく進しんする政せい策さくが進すすめられている。

  Policies are being advanced to promote the use of domestically produced lumber.